Pyrolysis of 3-phenyl-1,2,3-benzotriazin-4-one
Abstract
Decomposition of 3-phenyl-1,2,3-benzotriazin-4-one at 280–320° gives 9-acridone and phenanthridin-6-one. A mechanism is suggested for the novel rearrangement involved in formation of the major product, 9-acridone. In liquid paraffin at 250° hydrogen abstraction from the solvent supervenes to give benzanilide.